fix(#14): Implement database migrations system with baseline migration

backend/migrations/config.js

@@ -0,0 +1,17 @@
+// Migration configuration
+export default {
+  // Database connection settings
+  connection: {
+    host: process.env.DB_HOST || 'localhost',
+    port: process.env.DB_PORT || 3306,
+    user: process.env.DB_USER || 'root',
+    password: process.env.DB_PASSWORD || '',
+    database: process.env.DB_NAME || 'helpyourneighbour'
+  },
+  
+  // Migration table name
+  tableName: 'migrations',
+  
+  // Path to migration files
+  migrationsDir: './migrations'
+};